Question

Workings please 

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b)
It is known that an average of 5 trains
pass through Grand Central Terminal every 30
minutes. Find the probability that
i.
Exactly 4 trains will pass in 30
minutes
ii.
less than 2 trains will pass in an
hour
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Transcribed Image Text

b) It is known that an average of 5 trains pass through Grand Central Terminal every 30 minutes. Find the probability that i. Exactly 4 trains will pass in 30 minutes ii. less than 2 trains will pass in an hour

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